Improvement in shuttle-actuating mechanisms for sewing-machines



H. E. DIETERLE. Shuttle Aotuating Mechanism for Sewing-Machines.

No. 218,811. Patented Aug. 26,1879.

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UNITED STATES PATENT OFFICE.

HENRY E. DIETERLE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF HIS RIGHTTO GUSTAV BANDELOW, OF SAME PLACE.

IMPROVEMENT lN SHUTTLE-ACTUATING MECHANISMS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 218,811, dated August26, 1879; application'filed April 10, 1879.

To all whom it may concern:

Be it known that I, HENRY E. DIETERLE, of Chicago, in the county of Cookand State of Illinois, have invented a new and useful In]- provementin'the Shuttle-Actuating Mechanism for Sewing-Machines, which is fullydescribed in the following specification, reference being bad to theaccompanying drawings, in Which- Figure 1 represents an elevation of myimprovement; Fig.2,a section of the same, taken on the line mm, Fig. 1;Fig. 3, a transverse section, on an enlarged scale, taken on the line 3y, Fig. 1 and Fig. 4, a detail view of the actuating-lever detached.

My invention relates to that class of sewingmachines in which a shuttleis used; and the object thereof is to improve the devices by means ofwhich the shuttle is thrown.

The invention consists in the peculiar construction of the actuatin g-lever which vibrates the shuttle-lever, and the method of mounting it, allof which will be hereinafter more fully described, and pointed outdefinitely in the claims.

I have shown only so much of a machine as is necessary to illustrate myinvention, and shall only describe the same with such allusions to otherparts of the machine as will be readily understood.

In the drawings, A represents the shuttlelever, which is attached to asupport, B, and is usually arranged to vibrate horizontally. This leveris vibrated by an actuating-lever, (l, which is mounted in the frame inan upright position. I

The lever G has heretofore been mounted in the frame by a pivotedsupport, which gave it a fixed position, or, in other words, wouldpermit it to vibrate in only one plane, and for this reason there hasbeen more or less stiffness in the working of the devices forreciprocating the shuttle, owing to the peculiar nature of theattachment and movement required.

The lower end of the lever O is connected to the short arm of theshuttle-lever A, and the upper end is usuallyfprovided with a fork, 0,within which a cam, D, on the driving-shaft d is arranged to rotate,thereby vibrating the lever G, and giving a corresponding movement tothe shuttle-lever.

Now, it isevident that the connection between the shuttle-lever and thelever 0 must be loose, as the connecting ends of these levers move indifferent arcs. When the lever O is mounted on a fixed pivot, this jointat the lower end has been made by forking the end of one lever andarranging the end ofthe other within the fork, which occasions friction,and is not in other respects satisfactory in its working. The fork onthe upper end of the lever O,within which the cam works, should also befree to follow the cam perfectly, so as to prevent friction by anybinding between these two parts. I therefore support the lever O by ajoint which permits it to turn and vibrate in any direction, so as tofollow instantly any change necessary in the position of the lever.vThis is accomplished by providing the lever with a ball or globe, 0 atthe point desired for the support thereof.

Two pins, E, are threaded, so as to be inserted in proper seats in thesupporting-frame, and are made with concave recesses e at their innerends, corresponding to the convexity of the ball 0 The lever O isarranged in the frame so that the ball 0 will be embraced and heldbetween the pins E, as shown in Fig. 3 of the drawings, the latter beingturned up against the ball and provided with jam-nuts d, to fasten themin position.

Now, it is evident that this joint will permit the lever O to be turnedwith the slightest force in any direction, and to vibrate in any path,regular orirregular, so that the fork on the upper end will alwaysfollow the driving-cam, the lever O finding its center and changing itscenter, according to circumstances.

This construction permits me to use a different joint at the lower endof the actuating-lever, which is provided with a ball, 0 and in the endof the shuttle-lever a circular socket, to, is provided, adapted to justreceive the ball 0 This socket or seat a is made by simply drilling around hole through the end of the lever, and the joint thus formed willaccommodate the changing relative positions of the connecting ends ofthe two levers, in connection with the free movement of the lever C onits center of motion.

My improvement gives great ease in the working of the shuttle mechanism,as it prevents friction, and also saves wear, so that it is economical,as well as easily worked.

The improvement is not limited to the cam device for vibrating theactuating-lemmas it is equally applicable to any other device adapted toproduce this movement.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The lever 0, provided with a ball, 0, in combination with the pivotalpins E, having concavitiese at their inner ends, between which the ballis held, substantially as and for the purpose set forth.

HENRY E. DIETERLE.

Witnesses:

Jun. 0. MACGREGOR, W. (J. UoRLIEs.

